I used to learn abacus – 20 years ago -, and it actually helped me to learn
math skills. I think it is much more helpful for students than using a
calculator. I think this virtual abacus is useful because it is hard to find a
real abacus these days – they are only considered as antiques or toys.

I wish this tool can show the actual numbers if the user moves the beads around.
So the users can check their calculation. If you don’t know how to use abacus,
it could be difficult to use in math classes.

This material is based upon work supported by the
National Science Foundation under Grant DUE-0226284.
Any opinions, findings, and conclusions or recommendations
expressed in this material are those of the author(s)
and do not necessarily reflect the views of the
National Science Foundation.